You Have To Watch How Bread Bakes Inside A Volcano

While grilling steaks over molten lava is purely a science stunt, baking bread in a volcano is a deep-rooted tradition. In Iceland, filmmaker Alison Grasso captured the intriguing process by shadowing bakers just outside of Reykjavik.

After loading the ingredients into a metal pot and sealing it with a plastic film, Viktor at Laugarvatn Fontana Spa buries his bread in the hot and bubbling sand that act as "geothermal ovens" and slow-cook the rye bread until it comes out dense, sweet, and molasses-y.